How to Fix a Leaking Faucet – The Complete Guide

A dripping faucet isn’t just an annoyance—it can waste litres of water and drive up your bills. Over time, even a A small leak can lead to bigger plumbing issues – here’s why . The good news? Most faucet leaks are easy to fix with a few basic tools and a little know-how. In this guide, we’ll walk you through why faucets leak, how to fix them, and when it’s time to call a plumber.

If your faucet is dripping, the most likely cause is a worn washer, faulty O-ring, or How mineral build-up can affect your heating system inside the fixture. Over time, constant water pressure wears down these components, leading to persistent leaks. By identifying the type of faucet and the source of the problem early, you can avoid costly repairs and wasted water. Not sure what type of faucet you have? Check this guide to A quick guide to identifying different types of faucets before proceeding.

Common Causes of a Leaking Faucet

1. Worn-Out Washers
   Washers sit between the valve seat and handle, creating a seal that prevents water from flowing when the tap is turned off. Over time, they wear down, leading to leaks.
2. Faulty O-Rings
   The O-ring is a small rubber ring that helps secure the handle. If it becomes loose or damaged, water may start leaking from the base of the faucet.
3. Damaged Valve Seat
   The valve seat connects the faucet to the spout. Mineral deposits can corrode it over time, causing leaks at the spout base.
4. Worn Cartridge or Ball Assembly
   Cartridge and ball faucets have moving parts that control water flow. If these parts wear out, you’ll notice leaking or difficulty turning the faucet on and off.
5. High Water Pressure
   Excessively high water pressure can cause faucets to leak intermittently, especially at night when overall household demand is lower.

Tools You’ll Need to Fix a Leaky Faucet

• Adjustable wrench
• Phillips and flat-head screwdriver
• Penetrating oil (e.g., WD-40)
• Replacement washers and O-rings
• Plumber’s tape
• Cloths or rags

Step-by-Step Guide to Fixing a Leaky Faucet

1. Turn Off the Water Supply
   Locate the shutoff valve under the sink and turn it clockwise to stop the water flow.
2. Disassemble the Faucet Handles
   Use a screwdriver to remove the faucet handle. For some models, you may need to loosen a small screw underneath the handle.
3. Remove and Inspect the Valve Stem
   Pull out the valve stem or cartridge. Look for visible signs of wear, corrosion, or damage.
4. Replace Worn Washers, O-Rings, or Cartridge
   Swap out old parts for new ones. Make sure the replacement parts match your faucet model.
5. Clean and Reassemble the Faucet
   Scrub mineral deposits from the valve seat using vinegar or a gentle cleaning solution. Reassemble all parts in reverse order.
6. Test for Leaks
   Turn the water supply back on and check if the leak is fixed.

How to Fix Different Types of Faucets

• Compression Washer Faucets — Replace the washer and O-ring to stop drips.
• Ball Faucets — Use a repair kit to replace seals and springs.
• Cartridge Faucets — Install a new cartridge if water leaks from the handle.
• Disc Faucets — Check and replace worn-out ceramic discs.

When to Call a Professional

If your faucet continues to leak despite replacing key components, or if you suspect hidden plumbing damage, it’s time to call a plumber. Other signs that require professional attention include:

• Persistent low water pressure
• Leaks that return quickly after repair
• Visible corrosion or damage inside the pipes

Preventing Future Faucet Leaks

• Replace washers and O-rings regularly
• Avoid over-tightening handles
• Clean aerators to remove mineral build-up
• Check for water pressure issues

Get Professional Help with WarmZilla

If DIY fixes aren’t enough, WarmZilla’s expert plumbers can diagnose and repair your quickly and efficiently. Don’t let a small drip turn into a bigger problem – book a plumbing repair with WarmZilla today!